上海交通大学学报

上海交通大学学报 ›› 2018, Vol. 52 ›› Issue (4): 403-409.doi: 10.16183/j.cnki.jsjtu.2018.04.004

• 学报（中文） • 上一篇    下一篇

基于复杂柔性运动流场数值求解的动网格方案及应用

郭泽宇1，陈作钢1,2   

  1. 上海交通大学 海洋工程国家重点实验室； 高新船舶与深海开发装备协同创新中心， 上海 200240
  • 发布日期:2025-07-01

A Dynamic Grids Method for Numerical Simulation of Complicated Flexible Movement Flow Field and Its Application

GUO Zeyu1,CHEN Zuogang1,2   

  1. State Key Laboratory of Ocean Engineering; Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China
  • Published:2025-07-01

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95

被引次数

1

摘要： 为解决在复杂柔性边界非定常变化的流场中高精度结构化网格的应用问题，提出一种二维贴体结构网格快速生成的动网格计算方案，基于代数法对流场边界进行贴体网格快速生成，根据边界的变化，随时间步快速生成新的高质量结构化网格.应用于类鱼体柔性推进流场的计算结果显示，所提出的方案在计算负荷、网格交叉、多时间步网格质量等方面性能良好，充分显示了结构化网格在网格生成速度、网格质量、计算精度、湍流模型适用性等方面的优势，为柔性运动的流场研究提供了新方案.

关键词: 数值模拟； 复杂柔性运动流场； 动网格技术； 贴体结构网格； 类鱼推进

Abstract: In order to apply the high-precision structured grids in the flow field with complicated moving and flexible boundaries, a new adaptive control generation dynamic grids method is developed based on two-dimensional body fitted grids. The grids generation method is proposed to generate updated high-precision body fitted structured grids in each time step according to movements of boundaries. A numerical study of fish-like propulsion is carried out by using the new method, and the high computational cost, the grids intersection and quality reduction have effectively been avoided. It makes a full use of advantages of structured grids in accuracy and rate of grids generation and applicability of turbulence models. This new grid generation method is benefitial to the research of flow problems with the moving and flexible boundaries.

Key words: numerical simulation; complicated flexible movement flow field; dynamic grids method; body fitted structured grids; fish-like propulsion

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